Two-chamber low-pressure casting holding furnace and low-pressure casting method

By directly connecting the insulation chamber and the low-pressure casting chamber and setting up a second air inlet pipe, the problem of easy wear and channel blockage of the aluminum liquid intermediate valve is solved, higher pressure bearing capacity and production efficiency are achieved, and it is suitable for high-voltage applications such as new energy vehicles. Castings with mechanical properties requirements.

CN112692257AActive Publication Date: 2021-04-23NENGSHUO THERMAL TECH (QINGYUAN) CO LTD
8 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2021-01-29
Publication Date
2021-04-23

AI Technical Summary

Technical Problem

The middle valve of the molten aluminum in the existing low-pressure casting holding furnace is prone to wear and has insufficient sealing capability, resulting in limited pressure in the pressurized chamber, making it difficult to meet high mechanical performance requirements such as new energy vehicles. The miniaturized design of the channel is prone to blockage, affecting production efficiency.

Method used

Design a two-chamber low-pressure casting holding furnace. The holding chamber is directly connected to the low-pressure casting chamber. The intermediate valve is removed. The second air inlet pipe is set to cooperate with the first air inlet pipe to improve the overall working performance. It is also equipped with a blockage clearing device and debris extrusion device. Pressure concentration device to ensure high pressure and smooth passage.

Benefits of technology

It achieves higher pressure-bearing capacity, can produce thin structural parts with a larger projected area, reduces the cost and leakage risk caused by the intermediate valve, handles clogging problems in a timely manner, and improves production efficiency and product uniformity.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a two-chamber low-pressure casting holding furnace and a low-pressure casting method. The two-chamber low-pressure casting holding furnace comprises a heat preservation chamber, a low-pressure casting chamber, a communicating cavity, a liquid rising pipe, a first air inlet pipe and a liquid opening, wherein the heat preservation chamber comprises a precipitation cavity and a confluence cavity; and the communicating cavity comprises a liquid inlet section, a transition section and a liquid outlet section. Compared with the prior art, the heat preservation chamber of the holding furnace is directly communicated with the low-pressure casting chamber, an intermediate valve is omitted, and the pressure bearing capacity of the holding furnace is greatly improved; and large pressure can be generated by arranging a second air inlet pipe and enabling the second air inlet pipe to be matched with the first air inlet pipe, so that the overall working performance of the holding furnace is improved in a spanning manner, the holding furnace can be used for producing thin structural parts, such as automobile chassis parts, A columns and B columns, with larger projection areas, and the practicability of the holding furnace is greatly improved.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Low-pressure casting apparatus, method of inert gas filling and process for manufacturing cast article

    CN101657282A

  • Double-chamber continuous-pressurization molten aluminum electrical heating and holding furnace

    CN104646646A

  • Pressurizing type hot metal supplying furnace

    CN104907528A

  • Low-pressure casting three-chamber maintaining furnace with molten aluminum suspending function

    CN107470586A

  • Low-pressure casting device

    JP1990137659A

Cited By

  • Anti-gravity casting equipment using electromagnetic pump

    CN114769552A

  • Aircraft canopy suspension device and preparation method

    CN115044807A